主要内容:
考虑能量注入到反向激波中,或者外激波中,所产生的同步辐射和逆康普顿散射的高能成分。(不知道这里为什么只针对短暴)
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文章信息:
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- · arXiv e-print (arXiv:1312.0590)
- · Citations to the Article (1) (Citation History)
- · Refereed Citations to the Article
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Title: |
| Prospects for GeV-TeV detection of short gamma-ray bursts with extended emission |
Authors: |
| Veres, P.; Mészáros, P. |
Publication: |
| eprint arXiv:1312.0590 |
Publication Date: |
| 12/2013 |
Origin: |
| ARXIV |
Keywords: |
| Astrophysics - High Energy Astrophysical Phenomena |
Comment: |
| 8 pages, 15 figures, submitted to ApJ |
Bibliographic Code: |
| 2013arXiv1312.0590V |
Abstract
We discuss the GeV to TeV photon emission of gamma-ray bursts (GRBs)
within the refreshed shock and the continuous injection scenarios,
motivated by the observation of extended emission in a substantial
fraction of short GRBs. In the first model we assume that the central
engine
emits promptly material with a range of Lorentz factors. When the
fastest shell starts
to decelerate, it drives a forward shock into the
ambient medium and a reverse shock in the
ejecta. These shocks are
reenergized by the slower and later arriving material. In the second
model we assume that there is a continued ejection of material over an
extended time, and the continuously arriving new material keeps
reenergizing the shocks formed by the preceding shells of
ejecta. We
calculate the synchrotron and synchrotron self-Compton radiation
components for the forward and reverse shocks and find that prospective
and current GeV to TeV range instruments such as CTA, HAWC, VERITAS and
HESS have a good chance to detect afterglows of short bursts with
extended emission, assuming a reasonable response time.
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